Tool-handle-reinforcing device.



W. A. SCHENCK.

TOOL HANDLE REINFORCING DEVICE.

APPLICATION FILED JUNE 2. I927.

1,283,323. Patented Oct. 29, 1918.

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onion WILKENS A. SGHENCK, OF PHILADELPHIA, PENNSYLVANIA.

TOOL-HANDLE-REINFORCING DEVICE.

Specification of Letters Patent.

Patented @ct. 29, 191$.

Application filed June 2, 1917. Serial No. 172,470.

To all whom it may concern:

Be it known that I, WILKENS A. SoianNoK, a citizen of the United States,residing in Philadelphia, Pennsylvania, have inventedTool-Handle-Reinforcing Devices, of which the following is aspecification.

One object of this invention is to provide a structure particularlydesigned to be interposed or mounted between a handle and the objectsuch as a tool head, to which it is attached which will serve toreinforce or strengthen said handle at and adjacent its point ofengagement with said object, the arrangement of parts being such as toeffectually prevent the accidental separation of the object from thehandle.

Another object of the invention is to provide a novel form of bushingstructure, which while being laterally flexible to a certain degree,shall materially reinforce a handle or similar structure adjacent thepoint at which it enters or is connected to a tool head or equivalentbody.

A further desire is to provide a novel form of ferrule for a tool handlewhich in addition to being so applied as to tend toremain in positionthereon, shall firmly grip a tool mounted upon it, with a view toretainingthe latter in position, as well as reinforcing the adjacentportions of the handle.

These objects and other advantageous ends I secure as hereinafter setforth, reference being had to the accompanying drawings, in which:

Figure 1 is a side elevation of a hammer provided with my invention;

Fig. 2 1s a plan of the structures shown in Fig. 1; and

Fig. 3 is a transverse section on the line 33, Fig. 1.

In the above drawings 1 represents a tool head which in the presentinstance has the form of a common type of hammer in which the eye orhandle receiving opening is circular in outline though it may beelliptical or of any other suitable form without departing from myinvention. The handle 2 is dlminlshed in cross section toward itshead-receiving end where it is made circular Copies of this patent maybe obtained for in cross section and of smaller diameter ltlhari thediameter of the opening in the Mounted on this reduced handle end is aspring coil 3 made of spring strip material such as steel strip or wirewound in helical form and applied under tension to the end of the handleso as to at all times exert a compressive stress thereon. For thispurpose the interior diameter of the coil, ferrule or bushing is madeslightly smaller than the exterior diameter of the reduced part of thehandle, which with the opening through the head 1, if desired may beslightly tapered.

This opening is of such diameter that the spring coil 3 when mountedupon the handle,

will make a driven fit therewith,- and in order to still further insurethe retention of the head, I provide a pin 4: which extends transverselythrough its center from side to side thereof and passes through thehelical sleeve 3 as well as the handle 2. Such a construction as thatabove described is laterally fiexible outside of the tool head to agreater or less extent so that there is no tendency for the handle tobreak oif at or adjacent the point where it enters this sleeve.

Moreover since the latter extends from the interior of the head uponthat part of the handle immediately adjacent thereto which is subjectedto breaking stresses under operating conditions, I have found that it sofar strengthens the handle as to render its breakage highly improbable.Moreover owing to its frictional compressive grip u on the handle aswell as to its tight fit wit 1n the tool head, it tends to hold thelatter in position upon said handle even without the pin 4 which may beomitted without departing from my invention.

I claim The combination of a head having an opening; a handle for saidhead; and a coil of spring material maintained under tension to exertcompressive stress upon and frictionally grip the handle, said sleevefitting into the opening in the head.

WILKENS A. SCI-IENOK.

five cents each, by addressing the Commissioner or ratcnts, Washington,D. 0. i

